Add py.typed marker for MyPy support

Author: epdevlab

inelsmqtt/py.typed

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "elkoep-aio-mqtt"
-version = "0.1.0.beta.2"
+version = "0.1.0.beta.3"
 description = "Python library for iNELS mqtt protocol"
 readme = "README.md"
 requires-python = ">=3.10"
@@ -27,6 +27,9 @@ dependencies = []
 where = ["."]
 include = ["inelsmqtt*"]
 
+[tool.setuptools.package-data]
+inelsmqtt = ["py.typed"]
+
 [project.optional-dependencies]
 test = [
     "pytest>=8.2.0",